x11: howto disable rogue touchpad?

[O. Hartmann]

Using most recent CURRENT with up-to-date ports and X11 on a Lenovo
ThinkPad E540, I fight with the world biggest crap ever invented - the
Lenovo TouchPad! Fighting with ghost moves of the mouse, ghost-cut-and
paste, ghost jumps, I'm about to physically rip of that crap out of the
notebooks chassis! 

I seek a way to disable that touchpad. The crap EFI firmware of that
series (which seems a reduced form of the firmware of more expensive
types) doesn't allow me to disable the touchpad. So there must be found
a solution via X11.

Does anyone do have a solution? Please contact me (set me CC, I do not
subscribe the list).

Thanks in advance,

oh